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Standards GB - Chinese national standards - Page 5505
Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
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GB 10976-1989
WITHDRAWN
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Front projection equipment--Method for measuring screen illumination
WITHDRAWN published on 1.1.1989
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GB 10977-1989
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Friction welding machine
WITHDRAWN published on 1.1.1989
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GB/T 10978.1-1989
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WITHDRAWN published on 1.1.1989
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GB/T 10979-1989
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Household and similar use light switches
WITHDRAWN published on 31.3.1989
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GB/T 1098-1979
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Semi-circular(Woodruff) keys--Dimensions of cross sections and keyways
WITHDRAWN published on 23.6.1979
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GB 10980-1989
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Resistance welding equipment--Secondary connected cables with terminals connected to water cooled lugs--Dimensions and characteristics
WITHDRAWN published on 1.1.1989
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GB 10981-1989
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Measuring method for water content of dry electrostatic toner
WITHDRAWN published on 1.1.1989
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GB 10982-1989
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Photoconductor drum for electrostatic copying process--Testing methods for working environment
WITHDRAWN published on 1.1.1989
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GB 10983-1989
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Spectroscope
WITHDRAWN published on 1.1.1989
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GB 10984-1989
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Monochromator
WITHDRAWN published on 1.1.1989
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